Scanning for wireless local area networks

A technology of wireless local area network and wireless network, applied in the field of wireless local area network

Active Publication Date: 2006-09-27
RES IN MOTION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Other client devices, such as desktop computers, may only receive power from an ext

Method used

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  • Scanning for wireless local area networks
  • Scanning for wireless local area networks
  • Scanning for wireless local area networks

Examples

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Embodiment Construction

[0014] Many specific details are given in the following detailed description to ensure a thorough understanding of the examples of the present invention. However, those who know the basic common knowledge in the field can understand that the embodiments of the present invention can also be implemented without these specific details. In addition, well-known methods, procedures, components, and circuits are not described in detail to avoid making the implementation of the present invention unclear.

[0015] figure 1 A typical communication system 100 according to an embodiment of the present invention is described. The system 100 includes a wireless access point (AP) 102 and a gateway 104 coupled with the AP 102 through a wired connection 106. For AP 102, gateway 104 and wired connection 106 may be part of a'distributed system'. Non-limiting examples of the gateway 104 include cable modems, asymmetric digital subscriber line (ADSL) modems, asynchronous transfer mode (ATM) network ...

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Abstract

In a wireless device (110), active scanning for a particular wireless network name is initiated during passive scanning for a wireless network (112) that matches a profile stored in a wireless local area network controller (204), the profile comprising the particular wireless network name. Active scanning for the particular wireless network name comprises transmitting one or more probe requests, each transmitted on a different communication channel.

Description

Technical field [0001] The present invention relates to wireless local area networks (WLAN for short). Specifically, the embodiments of the present invention relate to the power saving of one or more client devices in the wireless local area network. Background technique [0002] Some wireless networks are based on a cellular architecture in which the entire system is divided into multiple wireless network cells. A wireless network cell called a basic service set (basic service set, hereinafter referred to as BSS) includes client equipment controlled by a wireless network access point (AP). Another type of wireless network cell called independent basic service set (IBSS) contains client equipment that is not controlled by an access point. [0003] In BSS, the client device can use a time-sharing scheme to communicate with the access point through a shared wireless communication channel. In IBSS, client equipment can use a time-sharing scheme to directly communicate with other cli...

Claims

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Application Information

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IPC IPC(8): H04L12/28H04W48/16H04W84/12
CPCH04W84/12Y02B60/50H04W48/16Y02D30/70
Inventor 谢里弗·阿布德-卡达戴维·巴伽尔陈永胜
Owner RES IN MOTION LTD
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